 the process of hydraulic fracturing or fracking. The process involves injecting a mixture of water and chemicals deep underground to free trapped natural gas so it can be brought to the surface. And critics have long claimed this has contaminated Dimock's drinking water. Now comes an authoritative study by the EPA investigating the matter. And what did they find? Well, after intensely examining over 20 wells in Dimock, the agency declared there was no evidence that fracking could be linked to any groundwater contamination